Context: Right-clicking on a bond.
Attached Data...: opens Attached Data dialog window.
Bond properties : opens the Bond properties dialog window, which contains bond types and query properties.
*Absolute stereo (chiral):** Sets the "Absolute" chiral flag on the entire structure, indicating that the molecule represents a single, well-defined stereoisomer.
Paste: adds structure from clipboard to canvas
***** Absolute stereo flag is displayed only when the chiral flag visibility is turned on in View Settings dialog.